File: qsqlquery_iterator.h

package info (click to toggle)
kio-extras 4%3A22.12.3-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 10,768 kB
  • sloc: cpp: 26,898; ansic: 4,443; perl: 1,058; xml: 97; sh: 69; python: 28; makefile: 9
file content (68 lines) | stat: -rw-r--r-- 1,378 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
/*
 *   SPDX-FileCopyrightText: 2013-2016 Ivan Cukic <ivan.cukic@kde.org>
 *
 *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */

#ifndef UTILS_QSQLQUERYITERATOR_H
#define UTILS_QSQLQUERYITERATOR_H

#include <QSqlQuery>
#include <QVariant>

template <typename ResultSet>
class NextValueIterator {
public:
    enum Type {
        NormalIterator,
        EndIterator
    };

    NextValueIterator(ResultSet &query, Type type = NormalIterator)
        : m_query(query)
        , m_type(type)
    {
        if (type != EndIterator) {
            m_query.next();
        }
    }

    inline bool operator!= (const NextValueIterator<ResultSet> &other) const
    {
        Q_UNUSED(other);
        return m_query.isValid();
    }

    inline NextValueIterator<ResultSet> &operator*()
    {
        return *this;
    }

    inline QVariant operator[] (int index) const
    {
        return m_query.value(index);
    }

    inline QVariant operator[] (const QString &name) const
    {
        return m_query.value(name);
    }

    inline NextValueIterator<ResultSet> &operator ++()
    {
        m_query.next();
        return *this;
    }

private:
    ResultSet &m_query;
    Type m_type;

};

NextValueIterator<QSqlQuery> begin(QSqlQuery &query);
NextValueIterator<QSqlQuery> end(QSqlQuery &query);


#endif /* UTILS_QSQLQUERYITERATOR_H */